I have written a simple node that captures the videostream of an USB webcam using OpenCV and publishes the frames. So far, it always worked to display the frames in the rqtimageview plugin.

However, when I remove the ~/.config/ros.org/rqt_gui.ini file and rebuild the catkin workspace, the plugin crashes with a segfault as soon as I select the frame topic. Strange enough, if I revert to the old rqt_gui.ini file (lucky that I made a copy of before removing it), the imageview plugin works again. I suspect that this is a problem of OpenCV 2 and 3, but I can not infer the relation to the `rqtgui.ini` file.

Does anybody have an idea, what is going on here?